Effects of ultraviolet sterilization exposure on the structural and surface properties of graphite-/polymer-like carbon films

IF 2 4区材料科学 Q3 MATERIALS SCIENCE, COATINGS & FILMS

Thin Solid Films Pub Date : 2024-10-10 DOI:10.1016/j.tsf.2024.140549

Kazuya Kanasugi , Eito Ichijo , Ali Alanazi , Yasuharu Ohgoe , Yoshinobu Manome , Masanori Hiratsuka , Kenji Hirakuri

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引用次数: 0

Abstract

Existing research on the biological responses of amorphous carbon films has not adequately explored the influences of exposure to ultraviolet (UV) sterilization at 253.7 nm before cell culture. Thus, in this study, two types of amorphous carbon films, namely hydrogen-rich graphite-like carbon (GLC) and hydrogen-free polymer-like carbon (PLC) films, were deposited on Si substrates. The influences of different doses of UV sterilization exposure (at 253.7 nm) on the structures and surface properties of the amorphous carbon films were investigated. Spectroscopic ellipsometry and Raman analysis showed that there is no significant change in the optical constants and Raman spectra of GLC and PLC films. The surface properties of the amorphous carbon films, characterized by water contact angle measurements and X-ray photoelectron spectroscopy analysis, indicated that both types of films exhibited hydrophilicity and surface oxidation in response to UV sterilization. However, the effects of UV sterilization on PLC were more notable than those on GLC. Our findings highlight the need for standardization and optimization of UV sterilization conditions for specific films to promote the application of amorphous carbon film coatings in the medical domain.

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紫外线消毒照射对石墨/聚合物类碳薄膜的结构和表面特性的影响

现有关于无定形碳薄膜生物反应的研究尚未充分探讨细胞培养前暴露于 253.7 纳米紫外线（UV）灭菌的影响。因此，本研究在硅基底上沉积了两种类型的无定形碳薄膜，即富氢石墨样碳薄膜（GLC）和无氢聚合物样碳薄膜（PLC）。研究了不同剂量的紫外线消毒照射（253.7 纳米）对无定形碳薄膜的结构和表面特性的影响。光谱椭偏仪和拉曼光谱分析表明，GLC 和 PLC 薄膜的光学常数和拉曼光谱没有显著变化。通过水接触角测量和 X 射线光电子能谱分析，研究了无定形碳薄膜的表面特性，结果表明两种薄膜在紫外线灭菌后都表现出亲水性和表面氧化性。不过，紫外线灭菌对 PLC 的影响比对 GLC 的影响更明显。我们的研究结果凸显了针对特定薄膜进行紫外线灭菌条件标准化和优化的必要性，以促进无定形碳薄膜涂层在医疗领域的应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Thin Solid Films 工程技术-材料科学：膜

CiteScore

4.00

自引率

4.80%

发文量

381

审稿时长

7.5 months

期刊介绍： Thin Solid Films is an international journal which serves scientists and engineers working in the fields of thin-film synthesis, characterization, and applications. The field of thin films, which can be defined as the confluence of materials science, surface science, and applied physics, has become an identifiable unified discipline of scientific endeavor.